Dr. William Bayer, MD
SaveEndocrinology, Diabetes & Metabolism ·
Male ·
57 y/o
Accepting new patients
Dr. William Bayer, MD is an endocrinology, diabetes & metabolism specialist in Carol Stream, IL and has been practicing for 32 years. He specializes in endocrinology, diabetes & metabolism and internal medicine.
Northwestern Medicine Regional Medical Group
501 Thornhill Dr
Carol Stream, IL 60188Insurance Accepted
- Aetna
- Blue Cross Blue Shield of Illinois
- Cigna
- Cigna-HealthSpring
- CorVel
- Coventry Health Care
- First Health (Coventry Health Care)
- HealthLink
- HFN
- Humana
- LifeSynch
- Medicaid
- MultiPlan
- UniCare
- + 2 More
Learn about Dr. Bayer
Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.
Top Care Areas
See how frequently Dr. Bayer performs your care needs compared to other doctors.
Thyroid Cancer
very high
more than 99% of peers
Diabetes With Renal Manifestations
very high
more than 99% of peers
Hypothyroidism
very high
more than 99% of peers
Dr. Bayer's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.
Care Philosophy
This content was provided by Dr. Bayer ""Better people means better experiences. Our care team is committed to delivering results that change lives." "
2 Specialties
- Endocrinology, Diabetes & Metabolism
- Internal Medicine
2 Board Certifications
- Diabetes, Metabolism & EndocrinologyAccredited by: American Board of Internal Medicine*
- Internal MedicineAccredited by: American Board of Internal Medicine*
51 Conditions Treated
- Abnormal Thyroid
- Acromegaly and Gigantism
- Adrenal Gland Diseases
- Adrenal Incidentaloma
- Adrenal Insufficiency
- Autoimmune Diseases
- Autoimmune Thyroid Diseases
- Benign Tumor
- Bone Disorders
- Breast Diseases
- Calcium Metabolism Disorders
- Cancer
- Congenital Adrenal Hyperplasia (CAH)
- Cushing's Syndrome
- Diabetes Insipidus
- Diabetes Type 1
- Diabetes Type 2
- Diabetes With Renal Manifestations
- Diabetic Ketoacidosis
- Female Infertility
- Goiter
- Graves' Disease
- Growth Hormone Deficiency
- Gynecomastia
- Hashimoto's Disease
- Hypercalcemia
- Hyperkalemia
- Hyperlipidemia
- Hyperparathyroidism
- Hyperthyroidism
- Hypoglycemia
- Hypokalemia
- Hypoparathyroidism
- Hypopituitarism
- Hyposmolality and Hyponatremia
- Hypothyroidism
- Kidney Disease
- Lipid Disorders
- Malaise and Fatigue
- Multiple Endocrine Neoplasia
- Obesity
- Osteopenia
- Osteoporosis
- Overweight
- Symptomatic Menopause
- Testicular Dysfunction
- Thyroid Cancer
- Thyroid Cyst
- Thyroid Disease
- Thyroiditis
- Vitamin D Deficiency
Less
2 Procedures
- Continuous Glucose Monitoring
- Diabetes Counseling
Background Check
0 Malpractice Claims
No malpractice history found for Illinois.
0 Sanctions
No sanctions history found for the years that Healthgrades collects data.
0 Board Actions
No board actions found for the years that Healthgrades collects data.
Education
- Loyola University Of Chicago / Stritch School Of MedicineMedical School | Graduated 1986
- Loyola University Medical CenterInternship Hospital | Completed
- Loyola University Medical CenterResidency Hospital | Completed
- Loyola University Medical CenterFellowship Hospital | Completed
Awards & Recognition
Awards & Honors
- Healthgrades Honor Roll
Media & Publications
Dr. Bayer has no media or publications listed.
Languages Spoken
- English
Memberships & Professional Affiliations
Dr. Bayer does not have any memberships or affiliations listed. If you are Dr. Bayer and would like to add memberships or affiliations, please update your profile.
Dr. Bayer's Reviews
Likelihood to recommend Dr. Bayer
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Average Wait Time
- 16 – 30 minutes
Dr. Bayer's Performance
Office & Staff Performance
What People Say About Dr. William Bayer, MD
ReplyFlag Comment
I have been a patient of Dr. Bayer for over 20 years and have had consistent attention at my scheduled appointments. He always has suggestions on different options available to me. He does have to work within the parameters of my medical insurance, which can sometimes be a challenge. I have...Read More
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2
2D.Counter in Crest Hill – Jun 19, 2018
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Dr. Bayer has always listened to my symptoms, not just bloodwork results. When the tests he ran came back normal, but my symtpoms said otherwise, he ran more tests until he figured out what was wrong. When my prognosis wasn't great, he personally called me to go over the results and then followed...Read More
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22Bloomingdale – Jan 23, 2018
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Dr. Bayer is a Diabetic Endocrinologist that I have complete trust in has really turned my A1C Goal/Goals to the Positive. He is very knowledgeable in his field and he always spends appropriate time w/patient/patients. I will be 62 in December and have been battling Diabetes since 1999/2000. He has...Read More
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2Bryan Compton in St. Charles IL. – Apr 04, 2017
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Do not take the bad reviews seriously! Dr. Bayeris amazing & caring! So, if you need a really good doctor that cares about your health & does not set a timer when you walk in, he is your answer to getting your health back on track! I came to him when there was no one else. He cared & I am now on...Read More
Was this helpful?31
31marge in ELK GROVE VILLAGE – Mar 29, 2017
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Dr Bayer is a no-nonsense doctor that is very knowledgable and thoruough. I have gone to him for many years before a car accident and am now able to see him again. I could not find his phone number so I looked it up. As I read the reveiws that were positive, I could relate. As I read the...Read More
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2Hoffman Estates, IL – Mar 29, 2017
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Now Accepting New Patients
Dr. Bayer accepts 16 insurance carriers
- AetnaAetna EPOAetna POSAetna PPOManaged Choice POSOpen Choice PPO
- Blue Cross Blue Shield of IllinoisBlue AdvantageBlue Cross Blue Shield of Illinois HMOBlue Cross Blue Shield of Illinois PPOBlue Precision HMO
- CignaGreat West Healthcare-Cigna HMOGreat West Healthcare-Cigna POSGreat West Healthcare-Cigna PPO
- Cigna-HealthSpring
- CorVelWorker's Compensation WC
- Coventry Health CareCoventry Health Care HMOCoventry Health Care POSCoventry Health Care PPO
- First Health (Coventry Health Care)
- HealthLinkHealthLink HMOHealthLink POSHealthLink PPO
- HFNHFN PPOWorker's Compensation WC
- HumanaChoiceChoice CareChoice PPOHumana HMOHumana POSHumana PPO
- LifeSynchBehavioral Health
- Medicaid
- MultiPlanMultiPlan PPOPHCS Network PPO
- UniCareUniCare HMOUniCare POSUniCare PPO
- UnitedHealthCareChoiceChoice PlusUnited Behavioral HealthUnited Healthcare EPOUnited Healthcare HMOUnited Healthcare POSUnited Healthcare PPO
- Viant
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